//! LumosAI 安全模块
//!
//! 提供加密、审计、威胁检测等安全功能

use serde::{Deserialize, Serialize};

/// 安全错误类型
#[derive(Debug, thiserror::Error)]
pub enum SecurityError {
    #[error("加密失败: {0}")]
    EncryptionFailed(String),

    #[error("解密失败: {0}")]
    DecryptionFailed(String),

    #[error("威胁检测: {0}")]
    ThreatDetected(String),

    #[error("合规检查失败: {0}")]
    ComplianceViolation(String),

    #[error("审计日志错误: {0}")]
    AuditLogError(String),
}

pub type Result<T> = std::result::Result<T, SecurityError>;

/// 审计事件
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AuditEvent {
    pub id: String,
    pub timestamp: chrono::DateTime<chrono::Utc>,
    pub user_id: String,
    pub action: String,
    pub resource: String,
    pub result: String,
}

/// 安全服务
pub struct SecurityService {
    audit_enabled: bool,
}

impl SecurityService {
    pub fn new() -> Self {
        Self {
            audit_enabled: true,
        }
    }

    pub async fn log_audit_event(&self, event: AuditEvent) -> Result<()> {
        if !self.audit_enabled {
            return Ok(());
        }

        // 简化实现 - 实际应该写入数据库或日志文件
        tracing::info!("Audit event: {:?}", event);
        Ok(())
    }

    pub async fn encrypt_data(&self, data: &[u8]) -> Result<Vec<u8>> {
        // 简化实现
        Ok(data.to_vec())
    }

    pub async fn decrypt_data(&self, encrypted_data: &[u8]) -> Result<Vec<u8>> {
        // 简化实现
        Ok(encrypted_data.to_vec())
    }
}

impl Default for SecurityService {
    fn default() -> Self {
        Self::new()
    }
}
